Free stays show past due

Q: I am the campground supervisor and reside on site at no cost to me. I did not enter an amount but the program shows 19 days overdue and unpaid days, how do I fix that?

Go to Reservation Details and check the box by the "Paid-thru" date, making sure the date is the same as the "Last Night" so it considers it paid in full.  This is what determines the unpaid days (and the color coding on the Rack).